Not sure what area of the Hudson Valley your looking for but in the lower Hudson Valley I went to a wedding at The Garrison and it was beautiful. They had the ceremony there also, which was outside in the garden. Very pretty. The whole area overlooks the Hudson River. Also the food was really quite good, which I usually don't expect at weddings. Here is there website http://www.thegarrison.com/index_cont...
We got married at Twin Lakes in Hurley, NY last August. It is very pretty there...we got married right next to the lake and had the reception there inside. You can also have your reception outside. They also have a pool and accomodations for guests on site.
We used Riccardi's in Kingston, NY for our rehearsal dinner. We did the buffet option. It was a lot of food for a good price and it was laid back, which was great. We had about 40 people at our rehearsal dinner and they were able to accomodate all of us with out a problem.
We had our cake done at Lochman's Bakery in Saugerties, NY. It was good...nothing extrodinary.